How can I use Exmerge with Exchange Server 2007 to extract mailboxes ?

I have just read an article from the Exchange team Somewhere in the article they say this: Exchange 2007 will not actively block access from ExMerge clients supported by Exchange 2003. This is not a scenario officially tested but customers have reported that running ExMerge from an Exchange 2003 server and accessing Exchange 2007 databases indeed works. Native Exchange 2007 support for this PST is being planned to be part of Service Pack 1. http://msexchangeteam.com/archive/2006/11/28/431669.aspx In orther words try in your test environment first... Deli